Systems and methods for providing improved child-resistant safety container systems. Exemplary container systems include a container body having a registration mark and two apertures, a cap body having a registration mark and two apertures, and a locking pin. The container body and cap body can be configured so that when they are engaged, there is alignment between the registration marks of the container and cap bodies, and there is vertical alignment and radial alignment between respective apertures of the container and cap bodies so as to allow insertion of the locking pin through the apertures.